Alaska earthquakes

M1.7 earthquake 59 km E of Nikolski, Alaska

A magnitude 1.7 earthquake struck 59 km E of Nikolski, Alaska on Fri, Oct 21, 2016, 9:21 AM AKDT (17:21 UTC), 25 km (15 mi) below the surface.

A larger quake followed: M4.6 42 km NW of Nikolski, Alaska. This one was a foreshock.

Unalaska forecast More in Alaska

Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude: 1.7 (ML, local (Richter)), micro
Magnitude from: Alaska Earthquake Center
Local time: Fri, Oct 21, 2016, 9:21 AM AKDT
UTC: 2016-10-21 17:21:11 UTC
Depth: 24.7 km (15.3 mi), shallow
Epicenter: 52.892° N, 167.987° W
Region: Alaska
Tsunami flag: No
Status: Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Stations used: 11

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Unalaska, AlaskaPopulation 4,491. Forecast146 kmSW

Nearby

Within 100 km, magnitude 1.5 and up: 58 in the 60 days after this one and 51 in the 30 days before it.

After

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak016dk5s9us (also filed as ak14253040). Read Sat, Oct 3, 2026, 12:31 PM UTC.